Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
In September, Forest Mill experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 85.6°F (29.8°C) in August to a still moderately hot 80.6°F (27°C). Throughout September, Forest Mill witnesses a nighttime temperature average of 61°F (16.1°C).Heat index
Throughout September, the heat index is estimated at 84.2°F (29°C). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.Heat index values are typically calculated for conditions of shade and a light breeze. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Humidity
In Forest Mill, Tennessee, the average relative humidity in September is 76%.Rainfall
September is the month with the least rainfall. Rain falls for 14.1 days and accumulates 2.28" (58mm) of precipitation.Snowfall
In Forest Mill, snow does not fall in May through October.Daylight
In September, the average length of the day in Forest Mill, Tennessee, is 12h and 23min.On the first day of the month, sunrise is at 6:16 am and sunset at 7:10 pm. On the last day of September, in Forest Mill, sunrise is at 6:38 am and sunset at 6:28 pm CDT.
Sunshine
In Forest Mill, the average sunshine in September is 8.3h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 5 during September translates into these guidelines:
Take precautions - Protection against skin and eye damage is obliged. It's recommended to limit sun exposure when its radiation is at its peak during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Frequently asked questions
What is the usual temperature for Forest Mill in September?
What is the average humidity in September in Forest Mill?
What is the driest month in Forest Mill?
How much does it rain in Forest Mill in September?
When it does not snow in Forest Mill?
What is the average length of the day in September in Forest Mill?
When are sunrise and sunset in September in Forest Mill?
How long on average sun shines in September in Forest Mill?
How high is the UV index in September in Forest Mill?
Average temperature in September
Forest Mill, TN
- Average high temperature in September: 80.6°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in September: 61°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (30.7°F).
Average pressure in September
Forest Mill, TN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed in September
Forest Mill, TN
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).
Average humidity in September
Forest Mill, TN
- Average humidity in September: 76%
The months with the highest relative humidity are March and December (80%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in September
Forest Mill, TN
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is July (4.72").
The driest month (with the least rainfall) is September (2.28").
Average rainfall days in September
Forest Mill, TN
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is July (21 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in September
Forest Mill, TN
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.34").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Forest Mill, TN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Forest Mill, TN
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in September
Forest Mill, TN
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is October (17.8 days).
The month with the least sunshine days is July (8.1 days).
Average UV index in September
Forest Mill, TN
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Forest Mill, TN
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in September
Forest Mill, TN
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, June, September, October and November (6mi).
The months with the lowest visibility are January, May, July, August and December (5mi).
Forest Mill, Tennessee, USA
Weather forecast for your location
2. Allow the app to use your location
